File view/PageNav.php

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<?php
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.org/>                             //
//  ------------------------------------------------------------------------ //
//  This program is free software; you can redistribute it and/or modify     //
//  it under the terms of the GNU General Public License as published by     //
//  the Free Software Foundation; either version 2 of the License, or        //
//  (at your option) any later version.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  This program is distributed in the hope that it will be useful,          //
//  but WITHOUT ANY WARRANTY; without even the implied warranty of           //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the            //
//  GNU General Public License for more details.                             //
//                                                                           //
//  You should have received a copy of the GNU General Public License        //
//  along with this program; if not, write to the Free Software              //
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA //
//  ------------------------------------------------------------------------ //
// Author: Kazumi Ono (AKA onokazu)                                          //
// URL: http://www.myweb.ne.jp/, http://www.xoops.org/, http://jp.xoops.org/ //
// Project: The XOOPS Project                                                //
// ------------------------------------------------------------------------- //
/**
 * Generates pagination
 *
 * @copyright   http://www.impresscms.org/ The ImpressCMS Project
 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU General Public License (GPL)
 * @category    ICMS
 * @package     View
 * @subpackage  PageNav
 * @version $Id: PageNav.php 12313 2013-09-15 21:14:35Z skenow $
 */
/**
 * Class to facilitate navigation in a multi page document/list
 *
 * @category    ICMS
 * @package     View
 * @subpackage  PageNav
 * @author      Kazumi Ono  <onokazu@xoops.org>
 * @copyright   Copyright (c) 2000 XOOPS.org
 */
class icms_view_PageNav {

    /**
     * @public int $total  Total of pages to show
     */
    public $total;

    /**
     * @public int $perpage  Total of items to show per page
     */
    public $perpage;

    /**
     * @public int $current  What is the current page
     */
    public $current;

    /**
     * @public string $url   What is the current url
     */
    public $url;

    /**
     * Constructor
     *
     * @param   int  $total_items   Total number of items
     * @param   int  $items_perpage  Number of items per page
     * @param   int  $current_start  First item on the current page
     * @param   string  $start_name  Name for "start" or "offset"
     * @param   string  $extra_arg    Additional arguments to pass in the URL
     */
    public function __construct($total_items, $items_perpage, $current_start, $start_name = "start", $extra_arg = "") {
        $this->total = (int) ($total_items);
        $this->perpage = (int) ($items_perpage);
        $this->current = (int) ($current_start);
        if ($extra_arg != '' && (substr($extra_arg, -5) != '&amp;' || substr($extra_arg, -1) != '&')) {
            $extra_arg .= '&amp;';
        }
        $this->url = $_SERVER['PHP_SELF'] . '?' . $extra_arg . trim($start_name) . '=';
    }

    /**
     * Create text navigation
     *
     * @param   integer $offset
     * @return  string
     */
    public function renderNav($offset = 4) {
        global $icmsConfigPersona, $xoTheme;

        $style = (isset($icmsConfigPersona['pagstyle']) && file_exists(ICMS_LIBRARIES_PATH . '/paginationstyles/paginationstyles.php'))?$icmsConfigPersona['pagstyle']:'default';
        $ret = '';
        if (isset($xoTheme)){
            $xoTheme->addStylesheet(ICMS_LIBRARIES_URL . '/paginationstyles/css/' . $icmsConfigPersona['pagstyle'] . '.css', array("media" => "all"));
        } else {
            echo'<link rel="stylesheet" type="text/css" href="' . ICMS_LIBRARIES_URL . '/paginationstyles/css/' . $icmsConfigPersona['pagstyle'] . '.css" />';
        }
        if ($this->total <= $this->perpage) {
            return $ret;
        }
        $total_pages = ceil($this->total / $this->perpage);
        if ($total_pages > 1) {
            $prev = $this->current - $this->perpage;
            if ($prev >= 0) {
                $ret .= '<a href="' . $this->url . $prev . '">' . ((defined('_ADM_USE_RTL') && _ADM_USE_RTL)?"&#9658; ":"&#9668; ") . '' . _PREV . '</a> ';
            } else {
                $ret .= '<span class="disabled"><strong>' . ((defined('_ADM_USE_RTL') && _ADM_USE_RTL)?"&#9658; ":"&#9668; ") . '' . _PREV . '</strong></span> ';
            }
            $counter = 1;
            $current_page = (int) (floor(($this->current + $this->perpage) / $this->perpage));
            while ($counter <= $total_pages) {
                if ($counter == $current_page) {
                    $ret .= '<span class="current"><strong>' . (($style == 'default')?'(':'') . icms_conv_nr2local($counter) . (($style == 'default')?')':'') . '</strong></span> ';
                } elseif (($counter > $current_page-$offset && $counter < $current_page + $offset) || $counter == 1 || $counter == $total_pages) {
                    if ($counter == $total_pages && $current_page < $total_pages - $offset) {
                        $ret .= '... ';
                    }
                    $ret .= '<a href="' . $this->url . (($counter - 1) * $this->perpage) . '">' . icms_conv_nr2local($counter) . '</a> ';
                    if ($counter == 1 && $current_page > 1 + $offset) {
                        $ret .= '... ';
                    }
                }
                $counter++;
            }
            $next = $this->current + $this->perpage;
            if ($this->total > $next) {
                $ret .= '<a href="' . $this->url . $next . '">' . _NEXT . '' . ((defined('_ADM_USE_RTL') && _ADM_USE_RTL)?" &#9668;":" &#9658;") . '</a> ';
            } else {
                $ret .= '<span class="disabled"><strong>' . _NEXT . '' . ((defined('_ADM_USE_RTL') && _ADM_USE_RTL)?" &#9668;":" &#9658;") . '</strong></span> ';
            }
        }
        return '<div class="pagination ' . $style . '">' . $ret . '</div>';
    }

    /**
     * Create a navigational dropdown list
     *
     * @param   boolean  $showbutton Show the "Go" button?
     * @return  string
     */
    public function renderSelect($showbutton = false) {
        if ($this->total < $this->perpage) {
            return;
        }
        $total_pages = ceil($this->total / $this->perpage);
        $ret = '';
        if ($total_pages > 1) {
            $ret = '<form name="pagenavform">';
            $ret .= '<select name="pagenavselect" onchange="location=this.options[this.options.selectedIndex].value;">';
            $counter = 1;
            $current_page = (int) (floor(($this->current + $this->perpage) / $this->perpage));
            while ($counter <= $total_pages) {
                if ($counter == $current_page) {
                    $ret .= '<option value="' . $this->url . (($counter - 1) * $this->perpage) . '" selected="selected">' . icms_conv_nr2local($counter) . '</option>';
                } else {
                    $ret .= '<option value="' . $this->url . (($counter - 1) * $this->perpage) . '">' . icms_conv_nr2local($counter) . '</option>';
                }
                $counter++;
            }
            $ret .= '</select>';
            if ($showbutton) {
                $ret .= '&nbsp;<input type="submit" value="' . _GO . '" />';
            }
            $ret .= '</form>';
        }
        return $ret;
    }

    /**
     * Create navigation with images
     *
     * @param   integer  $offset
     * @return  string
     */
    public function renderImageNav($offset = 4) {
        if ($this->total < $this->perpage) {
            return;
        }
        $total_pages = ceil($this->total / $this->perpage);
        $ret = '';
        if ($total_pages > 1) {
            $ret = '<table><tr>';
            $prev = $this->current - $this->perpage;
            if ($prev >= 0) {
                $ret .= '<td class="pagneutral"><a href="' . $this->url . $prev . '">&lt;</a></td><td><img src="' . ICMS_URL . '/images/blank.gif" width="6" alt="" /></td>';
            } else {
                $ret .= '<td class="pagno"></a></td><td><img src="' . ICMS_URL . '/images/blank.gif" width="6" alt="" /></td>';
            }
            $counter = 1;
            $current_page = (int) (floor(($this->current + $this->perpage) / $this->perpage));
            while ($counter <= $total_pages) {
                if ($counter == $current_page) {
                    $ret .= '<td class="pagact"><strong>' . $counter . '</strong></td>';
                } elseif (($counter > $current_page-$offset && $counter < $current_page + $offset) || $counter == 1 || $counter == $total_pages) {
                    if ($counter == $total_pages && $current_page < $total_pages - $offset) {
                        $ret .= '<td class="paginact">...</td>';
                    }
                    $ret .= '<td class="paginact"><a href="' . $this->url . (($counter - 1) * $this->perpage) . '">' . $counter . '</a></td>';
                    if ($counter == 1 && $current_page > 1 + $offset) {
                        $ret .= '<td class="paginact">...</td>';
                    }
                }
                $counter++;
            }
            $next = $this->current + $this->perpage;
            if ($this->total > $next) {
                $ret .= '<td><img src="' . ICMS_URL . '/images/blank.gif" width="6" alt="" /></td><td class="pagneutral"><a href="' . $this->url . $next . '">&gt;</a></td>';
            } else {
                $ret .= '<td><img src="' . ICMS_URL . '/images/blank.gif" width="6" alt="" /></td><td class="pagno"></td>';
            }
            $ret .= '</tr></table>';
        }
        return $ret;
    }
}

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